Host problem

I have configured the folllowing files as so...

/etc/hosts
127.0.0.1          home_dev1
192.168.1.100  home_dev1

pg_hba.conf
host   all                                              trust
host   all   0.0.0.0  255.255.255.255   trust
I know redundance.
Why can't I log on using HOST name from remote client.

Started postmasted with -i option.
psql -h 192.168.100 my_database  << this works LOCAL
psql -h home_dev1 my_database  << this works LOCAL
psql -h 192.168.100 my_database  << this works REMOTELY
psql -h home_dev1 my_database  << this does not work REMOTELY

What confg am I missing?

Fredrick